Weighing-scale.



Urnrnn s'rn'rns MAQ Afri-nvr .l. FAIRBANKS AND CO., OF ST. JOHNSBURY,

1 TION OF VERMONT.

VERMOhl'l.l l CORPORA- WElGHlNG-SCALE. I

-Bpecication of Letters Patent.

Patented Nov. 27, 1906,

Original application filed Augast15,1906, Serial Ho. 274,295. Divided and this application filed July 23, 1906. Serial No. 327,380.

ence being had to the accompanying draw-v ings and to theletters of reference marked io thereon.

. This application is a division of an application for etters Patentv filed by me on the th' day of August, 1905, Serial No. 274,295.

The present invention relates to weighing- .5 scales, and particular] to platform-scales empio ed for the weighing oiz heavy loads7 althoug manyofits features may be employed to advantage in smaller scales ofthe same or 'of different construction. 2o The particular ob'ect of the invention is to provide a scale in W ich the lever-pivots are connected b suspensionmembers `to leversuyplorts an to the load-receiver.

` e invention consistsin tli'e matters here- ,e 5 inafter described, and'referred to in the appended claims.

Inthe aecomp anying` drawings, which illustrate the inventiom-'Figure 1 is an elevation, partly in section, of'a sullicient portion of a latform-scale to illustrate the invention. ig. 2 is a plan view of one of the levers.

F' 3 is an end elevation of one of the stand- ;ar the lever beingshwn in s'ection. Fig.

p '.14 is a side elevation of the standard andbearings for the butt-end of one of the levers. liigi is adetail perspective view showing the "standard, cross-piece, rocking block, saddle-blck'liearings, and links detached; and Fig. 6 `is an elevation ofthe cross-piece ofthe platform-pivot. y y

, In he drawings vthe lever a is provided with two openings b b. The knife-edge fulcrum c for thebutt of the lever is arranved in the openin b' with its edge down, and the eX- tended'en sV of this ulcrum are supportedby projectionsd extending from the opposite sidesv of the lever, -thekriife-edge crossing the plane of the lever and being su ported and remforced for, itsl entire 'lengt The v knifeedge c of the gilatform-pivot extends throuuh the -openi the projectlonsl d'9 The saddle-block bearlng e is faced "with hardened steel to receive i the knife-edge a', audits lower Aface is proand is similarly reinforced by vided with recesses for the reception of the 5 5 lower ends of a pair of suspensiox-i-linksf, the upper ends of which enter recesses formed in a rocking block g, the central lower portion of which isprovided with a rocker projectionli, fitting inal depression in the top of a cross- 6 piece i. The opposite ends ofthe cross-piece are tit-ted in recesses formed inthe tops of two stands lc, that rest on the side sills p oi" the underfrarning. l

ln order to prevent displacement of the rocker-block; the cross-piece is rovided with pins or lurs w, which enter etween pairs of lugs or fingers pro'ectin from the ends oi. the rocker-block. e sa die-block extends through the opening l; and formsy a bearinggn for the entire length of the knife-edge pivot c thus avoiding the tendency to sprlng found in the usual ty e ofbearings, Where the-knifeedges project iliom opposite sides ofthe leverand are supported by spaced bearings of the 7s horseshoe t pe. On the knife-edge pivot c rests a sad le-block e', over which passes the upper ends of links f carrying a cross-piece j, and this cross-piece is received in recesses formed in the lower ends of inverted stands 8o 7c, depending from the platform- 'rders o.

`By the employment of the rockerlock and cross-piece the stress on the two links f is.

e ualized and the saddle-block. bearing e isp,

al owed to freely swing into the same pla1'1'e'= li` with the bearing e. All of the stands k, lc"

are provided with openi s Z to permitim-l spection of the bearings'w en necessary 'and to allow the removal of the saddle-blocks,` 'and so free the levers, which in turn can be taken out Without driving out the pivots.

Having lthus described my invention, what I claim, and desire to secure by Letters Patent is- 1. Alever having two mainknie-edge iv- 95 ots provided with openingfacing thee ges of said pivots '-saddle-bloc bearings extending through the openings and engaging said pivots,v a rocking support disposed transversely of the lever, swin 'ng suspension links connectin one sad e-block to said sup ort and lin s connecting the other sad-v lle loci: tothe load-receiver.'

2. A lever having two main knife-edge pivotsv and provided with o 'enin facing the edges of said pivots sa die-b ook bearings extending through the openings and engaging said pivote,` a'support extending translos,

Ver-sely of tlio laver. and. ai pair of swinging suspension-links ooiineoing one saddle-block to Said supp-ori; and ii, similar pfi connecting the other sndflls-bloifvl; zo sho loa eeeiver.

3. 'A lever forinecl. with wo openings .-.ii'ouiid tlie. edges of its wo ni sin knife-edge pivots, saddloiblocl; bearings engaging' 'the pivots, swinging links supporting the saddleolook bearing of the ulerniniv0tlinks liangingrom Jihesiiiiilar saddlelock bearing,l 'of the platform-pivot, zinda pair o'snp- Connected, one of' tliir supports ouri'ving lili@ };la.f i'i'1i.

5. A lever loi'mofl vvitli iwo openings around lalie ed; s of iis wo niziin knife-edge pivots, iii eoiiilnfil'ion with .siiilflle-block bearings engaging these pivots., :.1 vpair of swinging links enrrying erich ol' 'iliese bearings, sind. with .n rocking Aliloeli l'rorn which one pair of these links is suppoiLed, tlie block being disposed t-rziiisversel)Y of said lever.

6. The combination willi :i lever having :i

` fuleruni knife-edge pivot willi its edge down,

and fi plnlfornvpivot with ils edge iijpfol bearings for these. pivos, ii pliii'l'orin-stanil, n rocking lilook upon 'die fiilei'uni-sund., :md arrzi-iigeil transversely ol ilie'levor, a, platform-homing, and suspension members conneo'iingf sziiil block wiili lie fnloruiii-beai'ing.

1n testimony whereof l zzllix my signature in presence of mvo witnesses.

HENK Y FARBA N Witnesses:

RUTLEY l?. FAiiiisiiniis DOROTHY FAIR BAN iis. 

